web/wp-admin/includes/image-edit.php
branchwordpress
changeset 132 4d4862461b8d
child 194 32102edaa81b
equal deleted inserted replaced
131:a4642baaf829 132:4d4862461b8d
       
     1 <?php
       
     2 /**
       
     3  * WordPress Image Editor
       
     4  *
       
     5  * @package WordPress
       
     6  * @subpackage Administration
       
     7  */
       
     8 
       
     9 function wp_image_editor($post_id, $msg = false) {
       
    10 	$nonce = wp_create_nonce("image_editor-$post_id");
       
    11 	$meta = wp_get_attachment_metadata($post_id);
       
    12 	$thumb = image_get_intermediate_size($post_id, 'thumbnail');
       
    13 	$sub_sizes = isset($meta['sizes']) && is_array($meta['sizes']);
       
    14 	$note = '';
       
    15 
       
    16 	if ( is_array($meta) && isset($meta['width']) )
       
    17 		$big = max( $meta['width'], $meta['height'] );
       
    18 	else
       
    19 		die( __('Image data does not exist. Please re-upload the image.') );
       
    20 
       
    21 	$sizer = $big > 400 ? 400 / $big : 1;
       
    22 
       
    23 	$backup_sizes = get_post_meta( $post_id, '_wp_attachment_backup_sizes', true );
       
    24 	$can_restore = !empty($backup_sizes) && isset($backup_sizes['full-orig'])
       
    25 		&& $backup_sizes['full-orig']['file'] != basename($meta['file']);
       
    26 
       
    27 	if ( $msg ) {
       
    28 		if ( isset($msg->error) )
       
    29 			$note = "<div class='error'><p>$msg->error</p></div>";
       
    30 		elseif ( isset($msg->msg) )
       
    31 			$note = "<div class='updated'><p>$msg->msg</p></div>";
       
    32 	}
       
    33 
       
    34 	?>
       
    35 	<div class="imgedit-wrap">
       
    36 	<?php echo $note; ?>
       
    37 	<table id="imgedit-panel-<?php echo $post_id; ?>"><tbody>
       
    38 	<tr><td>
       
    39 	<div class="imgedit-menu">
       
    40 		<div onclick="imageEdit.crop(<?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-crop disabled" title="<?php esc_attr_e( 'Crop' ); ?>"></div><?php
       
    41 
       
    42 	// On some setups GD library does not provide imagerotate() - Ticket #11536   
       
    43 	if ( function_exists('imagerotate') ) { ?>
       
    44 		<div class="imgedit-rleft"  onclick="imageEdit.rotate( 90, <?php echo "$post_id, '$nonce'"; ?>, this)" title="<?php esc_attr_e( 'Rotate counter-clockwise' ); ?>"></div>
       
    45 		<div class="imgedit-rright" onclick="imageEdit.rotate(-90, <?php echo "$post_id, '$nonce'"; ?>, this)" title="<?php esc_attr_e( 'Rotate clockwise' ); ?>"></div>
       
    46 <?php } else {
       
    47 		$note_gdlib = esc_attr__('Image rotation is not supported by your web host (function imagerotate() is missing)');
       
    48 ?>
       
    49 	    <div class="imgedit-rleft disabled"  title="<?php echo $note_gdlib; ?>"></div>
       
    50 	    <div class="imgedit-rright disabled" title="<?php echo $note_gdlib; ?>"></div>
       
    51 <?php } ?>
       
    52 
       
    53 		<div onclick="imageEdit.flip(1, <?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-flipv" title="<?php esc_attr_e( 'Flip vertically' ); ?>"></div>
       
    54 		<div onclick="imageEdit.flip(2, <?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-fliph" title="<?php esc_attr_e( 'Flip horizontally' ); ?>"></div>
       
    55 
       
    56 		<div id="image-undo-<?php echo $post_id; ?>" onclick="imageEdit.undo(<?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-undo disabled" title="<?php esc_attr_e( 'Undo' ); ?>"></div>
       
    57 		<div id="image-redo-<?php echo $post_id; ?>" onclick="imageEdit.redo(<?php echo "$post_id, '$nonce'"; ?>, this)" class="imgedit-redo disabled" title="<?php esc_attr_e( 'Redo' ); ?>"></div>
       
    58 		<br class="clear" />
       
    59 	</div>
       
    60 
       
    61 	<input type="hidden" id="imgedit-sizer-<?php echo $post_id; ?>" value="<?php echo $sizer; ?>" />
       
    62 	<input type="hidden" id="imgedit-minthumb-<?php echo $post_id; ?>" value="<?php echo ( get_option('thumbnail_size_w') . ':' . get_option('thumbnail_size_h') ); ?>" />
       
    63 	<input type="hidden" id="imgedit-history-<?php echo $post_id; ?>" value="" />
       
    64 	<input type="hidden" id="imgedit-undone-<?php echo $post_id; ?>" value="0" />
       
    65 	<input type="hidden" id="imgedit-selection-<?php echo $post_id; ?>" value="" />
       
    66 	<input type="hidden" id="imgedit-x-<?php echo $post_id; ?>" value="<?php echo $meta['width']; ?>" />
       
    67 	<input type="hidden" id="imgedit-y-<?php echo $post_id; ?>" value="<?php echo $meta['height']; ?>" />
       
    68 
       
    69 	<div id="imgedit-crop-<?php echo $post_id; ?>" class="imgedit-crop-wrap">
       
    70 	<img id="image-preview-<?php echo $post_id; ?>" onload="imageEdit.imgLoaded('<?php echo $post_id; ?>')" src="<?php echo admin_url('admin-ajax.php'); ?>?action=imgedit-preview&amp;_ajax_nonce=<?php echo $nonce; ?>&amp;postid=<?php echo $post_id; ?>&amp;rand=<?php echo rand(1, 99999); ?>" />
       
    71 	</div>
       
    72 
       
    73 	<div class="imgedit-submit">
       
    74 		<input type="button" onclick="imageEdit.close(<?php echo $post_id; ?>, 1)" class="button" value="<?php esc_attr_e( 'Cancel' ); ?>" />
       
    75 		<input type="button" onclick="imageEdit.save(<?php echo "$post_id, '$nonce'"; ?>)" disabled="disabled" class="button-primary imgedit-submit-btn" value="<?php esc_attr_e( 'Save' ); ?>" />
       
    76 	</div>
       
    77 	</td>
       
    78 
       
    79 	<td class="imgedit-settings">
       
    80 	<div class="imgedit-group">
       
    81 	<div class="imgedit-group-top">
       
    82 		<a class="imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);return false;" href="#"><strong><?php _e('Scale Image'); ?></strong></a>
       
    83 		<div class="imgedit-help">
       
    84 		<p><?php _e('You can proportionally scale the original image. For best results the scaling should be done before performing any other operations on it like crop, rotate, etc. Note that if you make the image larger it may become fuzzy.'); ?></p>
       
    85 		<p><?php printf( __('Original dimensions %s'), $meta['width'] . '&times;' . $meta['height'] ); ?></p>
       
    86 		<div class="imgedit-submit">
       
    87 		<span class="nowrap"><input type="text" id="imgedit-scale-width-<?php echo $post_id; ?>" onkeyup="imageEdit.scaleChanged(<?php echo $post_id; ?>, 1)" onblur="imageEdit.scaleChanged(<?php echo $post_id; ?>, 1)" style="width:4em;" value="<?php echo $meta['width']; ?>" />&times;<input type="text" id="imgedit-scale-height-<?php echo $post_id; ?>" onkeyup="imageEdit.scaleChanged(<?php echo $post_id; ?>, 0)" onblur="imageEdit.scaleChanged(<?php echo $post_id; ?>, 0)" style="width:4em;" value="<?php echo $meta['height']; ?>" />
       
    88 		<span class="imgedit-scale-warn" id="imgedit-scale-warn-<?php echo $post_id; ?>">!</span></span>
       
    89 		<input type="button" onclick="imageEdit.action(<?php echo "$post_id, '$nonce'"; ?>, 'scale')" class="button-primary" value="<?php esc_attr_e( 'Scale' ); ?>" />
       
    90 		</div>
       
    91 		</div>
       
    92 	</div>
       
    93 
       
    94 <?php if ( $can_restore ) { ?>
       
    95 
       
    96 	<div class="imgedit-group-top">
       
    97 		<a class="imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);return false;" href="#"><strong><?php _e('Restore Original Image'); ?></strong></a>
       
    98 		<div class="imgedit-help">
       
    99 		<p><?php _e('Discard any changes and restore the original image.'); 
       
   100 
       
   101 		if ( !defined('IMAGE_EDIT_OVERWRITE') || !IMAGE_EDIT_OVERWRITE )
       
   102 			_e(' Previously edited copies of the image will not be deleted.');
       
   103 
       
   104 		?></p>
       
   105 		<div class="imgedit-submit">
       
   106 		<input type="button" onclick="imageEdit.action(<?php echo "$post_id, '$nonce'"; ?>, 'restore')" class="button-primary" value="<?php esc_attr_e( 'Restore image' ); ?>" <?php echo $can_restore; ?> />
       
   107 		</div>
       
   108 		</div>
       
   109 	</div>
       
   110 
       
   111 <?php } ?>
       
   112 
       
   113 	</div>
       
   114 
       
   115 	<div class="imgedit-group">
       
   116 	<div class="imgedit-group-top">
       
   117 		<strong><?php _e('Image Crop'); ?></strong>
       
   118 		<a class="imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);return false;" href="#"><?php _e('(help)'); ?></a>
       
   119 		<div class="imgedit-help">
       
   120 		<p><?php _e('The image can be cropped by clicking on it and dragging to select the desired part. While dragging the dimensions of the selection are displayed below.'); ?></p>
       
   121 		<strong><?php _e('Keyboard shortcuts'); ?></strong>
       
   122 		<ul>
       
   123 		<li><?php _e('Arrow: move by 10px'); ?></li>
       
   124 		<li><?php _e('Shift + arrow: move by 1px'); ?></li>
       
   125 		<li><?php _e('Ctrl + arrow: resize by 10px'); ?></li>
       
   126 		<li><?php _e('Ctrl + Shift + arrow: resize by 1px'); ?></li>
       
   127 		<li><?php _e('Shift + drag: lock aspect ratio'); ?></li>
       
   128 		</ul>
       
   129 
       
   130 		<p><strong><?php _e('Crop Aspect Ratio'); ?></strong><br />
       
   131 		<?php _e('You can specify the crop selection aspect ratio then hold down the Shift key while dragging to lock it. The values can be 1:1 (square), 4:3, 16:9, etc. If there is a selection, specifying aspect ratio will set it immediately.'); ?></p>
       
   132 
       
   133 		<p><strong><?php _e('Crop Selection'); ?></strong><br />
       
   134 		<?php _e('Once started, the selection can be adjusted by entering new values (in pixels). Note that these values are scaled to approximately match the original image dimensions. The minimum selection size equals the thumbnail size as set in the Media settings.'); ?></p>
       
   135 		</div>
       
   136 	</div>
       
   137 
       
   138 	<p>
       
   139 		<?php _e('Aspect ratio:'); ?>
       
   140 		<span  class="nowrap">
       
   141 		<input type="text" id="imgedit-crop-width-<?php echo $post_id; ?>" onkeyup="imageEdit.setRatioSelection(<?php echo $post_id; ?>, 0, this)" style="width:3em;" />
       
   142 		:
       
   143 		<input type="text" id="imgedit-crop-height-<?php echo $post_id; ?>" onkeyup="imageEdit.setRatioSelection(<?php echo $post_id; ?>, 1, this)" style="width:3em;" />
       
   144 		</span>
       
   145 	</p>
       
   146 
       
   147 	<p id="imgedit-crop-sel-<?php echo $post_id; ?>">
       
   148 		<?php _e('Selection:'); ?>
       
   149 		<span  class="nowrap">
       
   150 		<input type="text" id="imgedit-sel-width-<?php echo $post_id; ?>" onkeyup="imageEdit.setNumSelection(<?php echo $post_id; ?>)" style="width:4em;" />
       
   151 		:
       
   152 		<input type="text" id="imgedit-sel-height-<?php echo $post_id; ?>" onkeyup="imageEdit.setNumSelection(<?php echo $post_id; ?>)" style="width:4em;" />
       
   153 		</span>
       
   154 	</p>
       
   155 	</div>
       
   156 
       
   157 	<?php if ( $thumb && $sub_sizes ) {
       
   158 		$thumb_img = wp_constrain_dimensions( $thumb['width'], $thumb['height'], 160, 120 );
       
   159 	?>
       
   160 
       
   161 	<div class="imgedit-group imgedit-applyto">
       
   162 	<div class="imgedit-group-top">
       
   163 		<strong><?php _e('Thumbnail Settings'); ?></strong>
       
   164 		<a class="imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);return false;" href="#"><?php _e('(help)'); ?></a>
       
   165 		<p class="imgedit-help"><?php _e('The thumbnail image can be cropped differently. For example it can be square or contain only a portion of the original image to showcase it better. Here you can select whether to apply changes to all image sizes or make the thumbnail different.'); ?></p>
       
   166 	</div>
       
   167 
       
   168 	<p>
       
   169 		<img src="<?php echo $thumb['url']; ?>" width="<?php echo $thumb_img[0]; ?>" height="<?php echo $thumb_img[1]; ?>" class="imgedit-size-preview" alt="" /><br /><?php _e('Current thumbnail'); ?>
       
   170 	</p>
       
   171 
       
   172 	<p id="imgedit-save-target-<?php echo $post_id; ?>">
       
   173 		<strong><?php _e('Apply changes to:'); ?></strong><br />
       
   174 
       
   175 		<label class="imgedit-label">
       
   176 		<input type="radio" name="imgedit-target-<?php echo $post_id; ?>" value="all" checked="checked" />
       
   177 		<?php _e('All image sizes'); ?></label>
       
   178 
       
   179 		<label class="imgedit-label">
       
   180 		<input type="radio" name="imgedit-target-<?php echo $post_id; ?>" value="thumbnail" />
       
   181 		<?php _e('Thumbnail'); ?></label>
       
   182 
       
   183 		<label class="imgedit-label">
       
   184 		<input type="radio" name="imgedit-target-<?php echo $post_id; ?>" value="nothumb" />
       
   185 		<?php _e('All sizes except thumbnail'); ?></label>
       
   186 	</p>
       
   187 	</div>
       
   188 
       
   189 	<?php } ?>
       
   190 
       
   191 	</td></tr>
       
   192 	</tbody></table>
       
   193 	<div class="imgedit-wait" id="imgedit-wait-<?php echo $post_id; ?>"></div>
       
   194 	<script type="text/javascript">imageEdit.init(<?php echo $post_id; ?>);</script>
       
   195 	<div class="hidden" id="imgedit-leaving-<?php echo $post_id; ?>"><?php _e("There are unsaved changes that will be lost.  'OK' to continue, 'Cancel' to return to the Image Editor."); ?></div>
       
   196 	</div>
       
   197 <?php
       
   198 }
       
   199 
       
   200 function load_image_to_edit($post_id, $mime_type, $size = 'full') {
       
   201 	$filepath = get_attached_file($post_id);
       
   202 
       
   203 	if ( $filepath && file_exists($filepath) ) {
       
   204 		if ( 'full' != $size && ( $data = image_get_intermediate_size($post_id, $size) ) )
       
   205 			$filepath = path_join( dirname($filepath), $data['file'] );
       
   206 	} elseif ( WP_Http_Fopen::test() ) {
       
   207 		$filepath = wp_get_attachment_url($post_id);
       
   208 	}
       
   209 
       
   210 	$filepath = apply_filters('load_image_to_edit_path', $filepath, $post_id, $size);
       
   211 	if ( empty($filepath) )
       
   212 		return false;
       
   213 
       
   214 	switch ( $mime_type ) {
       
   215 		case 'image/jpeg':
       
   216 			$image = imagecreatefromjpeg($filepath);
       
   217 			break;
       
   218 		case 'image/png':
       
   219 			$image = imagecreatefrompng($filepath);
       
   220 			break;
       
   221 		case 'image/gif':
       
   222 			$image = imagecreatefromgif($filepath);
       
   223 			break;
       
   224 		default:
       
   225 			$image = false;
       
   226 			break;
       
   227 	}
       
   228 	if ( is_resource($image) ) {
       
   229 		$image = apply_filters('load_image_to_edit', $image, $post_id, $size);
       
   230 		if ( function_exists('imagealphablending') && function_exists('imagesavealpha') ) {
       
   231 			imagealphablending($image, false);
       
   232 			imagesavealpha($image, true);
       
   233 		}
       
   234 	}
       
   235 	return $image;
       
   236 }
       
   237 
       
   238 function wp_stream_image($image, $mime_type, $post_id) {
       
   239 	$image = apply_filters('image_save_pre', $image, $post_id);
       
   240 
       
   241 	switch ( $mime_type ) {
       
   242 		case 'image/jpeg':
       
   243 			header('Content-Type: image/jpeg');
       
   244 			return imagejpeg($image, null, 90);
       
   245 		case 'image/png':
       
   246 			header('Content-Type: image/png');
       
   247 			return imagepng($image);
       
   248 		case 'image/gif':
       
   249 			header('Content-Type: image/gif');
       
   250 			return imagegif($image);
       
   251 		default:
       
   252 			return false;
       
   253 	}
       
   254 }
       
   255 
       
   256 function wp_save_image_file($filename, $image, $mime_type, $post_id) {
       
   257 	$image = apply_filters('image_save_pre', $image, $post_id);
       
   258 	$saved = apply_filters('wp_save_image_file', null, $filename, $image, $mime_type, $post_id);
       
   259 	if ( null !== $saved )
       
   260 		return $saved;
       
   261 
       
   262 	switch ( $mime_type ) {
       
   263 		case 'image/jpeg':
       
   264 			return imagejpeg( $image, $filename, apply_filters( 'jpeg_quality', 90, 'edit_image' ) );
       
   265 		case 'image/png':
       
   266 			return imagepng($image, $filename);
       
   267 		case 'image/gif':
       
   268 			return imagegif($image, $filename);
       
   269 		default:
       
   270 			return false;
       
   271 	}
       
   272 }
       
   273 
       
   274 function _image_get_preview_ratio($w, $h) {
       
   275 	$max = max($w, $h);
       
   276 	return $max > 400 ? (400 / $max) : 1;
       
   277 }
       
   278 
       
   279 function _rotate_image_resource($img, $angle) {
       
   280 	if ( function_exists('imagerotate') ) {
       
   281 		$rotated = imagerotate($img, $angle, 0);
       
   282 		if ( is_resource($rotated) ) {
       
   283 			imagedestroy($img);
       
   284 			$img = $rotated;
       
   285 		}
       
   286 	}
       
   287 	return $img;
       
   288 }
       
   289 
       
   290 
       
   291 function _flip_image_resource($img, $horz, $vert) {
       
   292 	$w = imagesx($img);
       
   293 	$h = imagesy($img);
       
   294 	$dst = wp_imagecreatetruecolor($w, $h);
       
   295 	if ( is_resource($dst) ) {
       
   296 		$sx = $vert ? ($w - 1) : 0;
       
   297 		$sy = $horz ? ($h - 1) : 0;
       
   298 		$sw = $vert ? -$w : $w;
       
   299 		$sh = $horz ? -$h : $h;
       
   300 
       
   301 		if ( imagecopyresampled($dst, $img, 0, 0, $sx, $sy, $w, $h, $sw, $sh) ) {
       
   302 			imagedestroy($img);
       
   303 			$img = $dst;
       
   304 		}
       
   305 	}
       
   306 	return $img;
       
   307 }
       
   308 
       
   309 function _crop_image_resource($img, $x, $y, $w, $h) {
       
   310 	$dst = wp_imagecreatetruecolor($w, $h);
       
   311 	if ( is_resource($dst) ) {
       
   312 		if ( imagecopy($dst, $img, 0, 0, $x, $y, $w, $h) ) {
       
   313 			imagedestroy($img);
       
   314 			$img = $dst;
       
   315 		}
       
   316 	}
       
   317 	return $img;
       
   318 }
       
   319 
       
   320 function image_edit_apply_changes($img, $changes) {
       
   321 
       
   322 	if ( !is_array($changes) )
       
   323 		return $img;
       
   324 
       
   325 	// expand change operations
       
   326 	foreach ( $changes as $key => $obj ) {
       
   327 		if ( isset($obj->r) ) {
       
   328 			$obj->type = 'rotate';
       
   329 			$obj->angle = $obj->r;
       
   330 			unset($obj->r);
       
   331 		} elseif ( isset($obj->f) ) {
       
   332 			$obj->type = 'flip';
       
   333 			$obj->axis = $obj->f;
       
   334 			unset($obj->f);
       
   335 		} elseif ( isset($obj->c) ) {
       
   336 			$obj->type = 'crop';
       
   337 			$obj->sel = $obj->c;
       
   338 			unset($obj->c);
       
   339 		}
       
   340 		$changes[$key] = $obj;
       
   341 	}
       
   342 
       
   343 	// combine operations
       
   344 	if ( count($changes) > 1 ) {
       
   345 		$filtered = array($changes[0]);
       
   346 		for ( $i = 0, $j = 1; $j < count($changes); $j++ ) {
       
   347 			$combined = false;
       
   348 			if ( $filtered[$i]->type == $changes[$j]->type ) {
       
   349 				switch ( $filtered[$i]->type ) {
       
   350 					case 'rotate':
       
   351 						$filtered[$i]->angle += $changes[$j]->angle;
       
   352 						$combined = true;
       
   353 						break;
       
   354 					case 'flip':
       
   355 						$filtered[$i]->axis ^= $changes[$j]->axis;
       
   356 						$combined = true;
       
   357 						break;
       
   358 				}
       
   359 			}
       
   360 			if ( !$combined )
       
   361 				$filtered[++$i] = $changes[$j];
       
   362 		}
       
   363 		$changes = $filtered;
       
   364 		unset($filtered);
       
   365 	}
       
   366 
       
   367 	// image resource before applying the changes
       
   368 	$img = apply_filters('image_edit_before_change', $img, $changes);
       
   369 
       
   370 	foreach ( $changes as $operation ) {
       
   371 		switch ( $operation->type ) {
       
   372 			case 'rotate':
       
   373 				if ( $operation->angle != 0 )
       
   374 					$img = _rotate_image_resource($img, $operation->angle);
       
   375 				break;
       
   376 			case 'flip':
       
   377 				if ( $operation->axis != 0 )
       
   378 					$img = _flip_image_resource($img, ($operation->axis & 1) != 0, ($operation->axis & 2) != 0);
       
   379 				break;
       
   380 			case 'crop':
       
   381 				$sel = $operation->sel;
       
   382 				$scale = 1 / _image_get_preview_ratio( imagesx($img), imagesy($img) ); // discard preview scaling
       
   383 				$img = _crop_image_resource($img, $sel->x * $scale, $sel->y * $scale, $sel->w * $scale, $sel->h * $scale);
       
   384 				break;
       
   385 		}
       
   386 	}
       
   387 
       
   388 	return $img;
       
   389 }
       
   390 
       
   391 function stream_preview_image($post_id) {
       
   392 	$post = get_post($post_id);
       
   393 	@ini_set('memory_limit', '256M');
       
   394 	$img = load_image_to_edit( $post_id, $post->post_mime_type, array(400, 400) );
       
   395 
       
   396 	if ( !is_resource($img) )
       
   397 		return false;
       
   398 
       
   399 	$changes = !empty($_REQUEST['history']) ? json_decode( stripslashes($_REQUEST['history']) ) : null;
       
   400 	if ( $changes )
       
   401 		$img = image_edit_apply_changes($img, $changes);
       
   402 
       
   403 	// scale the image
       
   404 	$w = imagesx($img);
       
   405 	$h = imagesy($img);
       
   406 	$ratio = _image_get_preview_ratio($w, $h);
       
   407 	$w2 = $w * $ratio;
       
   408 	$h2 = $h * $ratio;
       
   409 
       
   410 	$preview = wp_imagecreatetruecolor($w2, $h2);
       
   411 	imagecopyresampled( $preview, $img, 0, 0, 0, 0, $w2, $h2, $w, $h );
       
   412 	wp_stream_image($preview, $post->post_mime_type, $post_id);
       
   413 
       
   414 	imagedestroy($preview);
       
   415 	imagedestroy($img);
       
   416 	return true;
       
   417 }
       
   418 
       
   419 function wp_restore_image($post_id) {
       
   420 	$meta = wp_get_attachment_metadata($post_id);
       
   421 	$file = get_attached_file($post_id);
       
   422 	$backup_sizes = get_post_meta( $post_id, '_wp_attachment_backup_sizes', true );
       
   423 	$restored = false;
       
   424 	$msg = '';
       
   425 
       
   426 	if ( !is_array($backup_sizes) ) {
       
   427 		$msg->error = __('Cannot load image metadata.');
       
   428 		return $msg;
       
   429 	}
       
   430 
       
   431 	$parts = pathinfo($file);
       
   432 	$suffix = time() . rand(100, 999);
       
   433 	$default_sizes = apply_filters( 'intermediate_image_sizes', array('large', 'medium', 'thumbnail') );
       
   434 
       
   435 	if ( isset($backup_sizes['full-orig']) && is_array($backup_sizes['full-orig']) ) {
       
   436 		$data = $backup_sizes['full-orig'];
       
   437 
       
   438 		if ( $parts['basename'] != $data['file'] ) {
       
   439 			if ( defined('IMAGE_EDIT_OVERWRITE') && IMAGE_EDIT_OVERWRITE ) {
       
   440 				// delete only if it's edited image
       
   441 				if ( preg_match('/-e[0-9]{13}\./', $parts['basename']) ) {
       
   442 					$delpath = apply_filters('wp_delete_file', $file);
       
   443 					@unlink($delpath);
       
   444 				}
       
   445 			} else {
       
   446 				$backup_sizes["full-$suffix"] = array('width' => $meta['width'], 'height' => $meta['height'], 'file' => $parts['basename']);
       
   447 			}
       
   448 		}
       
   449 
       
   450 		$restored_file = path_join($parts['dirname'], $data['file']);
       
   451 		$restored = update_attached_file($post_id, $restored_file);
       
   452 
       
   453 		$meta['file'] = _wp_relative_upload_path( $restored_file );
       
   454 		$meta['width'] = $data['width'];
       
   455 		$meta['height'] = $data['height'];
       
   456 		list ( $uwidth, $uheight ) = wp_shrink_dimensions($meta['width'], $meta['height']);
       
   457 		$meta['hwstring_small'] = "height='$uheight' width='$uwidth'";
       
   458 	}
       
   459 
       
   460 	foreach ( $default_sizes as $default_size ) {
       
   461 		if ( isset($backup_sizes["$default_size-orig"]) ) {
       
   462 			$data = $backup_sizes["$default_size-orig"];
       
   463 			if ( isset($meta['sizes'][$default_size]) && $meta['sizes'][$default_size]['file'] != $data['file'] ) {
       
   464 				if ( defined('IMAGE_EDIT_OVERWRITE') && IMAGE_EDIT_OVERWRITE ) {
       
   465 					// delete only if it's edited image
       
   466 					if ( preg_match('/-e[0-9]{13}-/', $meta['sizes'][$default_size]['file']) ) {
       
   467 						$delpath = apply_filters( 'wp_delete_file', path_join($parts['dirname'], $meta['sizes'][$default_size]['file']) );
       
   468 						@unlink($delpath);
       
   469 					}
       
   470 				} else {
       
   471 					$backup_sizes["$default_size-{$suffix}"] = $meta['sizes'][$default_size];
       
   472 				}
       
   473 			}
       
   474 
       
   475 			$meta['sizes'][$default_size] = $data;
       
   476 		} else {
       
   477 			unset($meta['sizes'][$default_size]);
       
   478 		}
       
   479 	}
       
   480 
       
   481 	if ( !wp_update_attachment_metadata($post_id, $meta) || !update_post_meta( $post_id, '_wp_attachment_backup_sizes', $backup_sizes) ) {
       
   482 		$msg->error = __('Cannot save image metadata.');
       
   483 		return $msg;
       
   484 	}
       
   485 
       
   486 	if ( !$restored )
       
   487 		$msg->error = __('Image metadata is inconsistent.');
       
   488 	else
       
   489 		$msg->msg = __('Image restored successfully.');
       
   490 
       
   491 	return $msg;
       
   492 }
       
   493 
       
   494 function wp_save_image($post_id) {
       
   495 	$return = '';
       
   496 	$success = $delete = $scaled = $nocrop = false;
       
   497 	$post = get_post($post_id);
       
   498 	@ini_set('memory_limit', '256M');
       
   499 	$img = load_image_to_edit($post_id, $post->post_mime_type);
       
   500 
       
   501 	if ( !is_resource($img) ) {
       
   502 		$return->error = esc_js( __('Unable to create new image.') );
       
   503 		return $return;
       
   504 	}
       
   505 
       
   506 	$fwidth = !empty($_REQUEST['fwidth']) ? intval($_REQUEST['fwidth']) : 0;
       
   507 	$fheight = !empty($_REQUEST['fheight']) ? intval($_REQUEST['fheight']) : 0;
       
   508 	$target = !empty($_REQUEST['target']) ? preg_replace('/[^a-z0-9_-]+/i', '', $_REQUEST['target']) : '';
       
   509 	$scale = !empty($_REQUEST['do']) && 'scale' == $_REQUEST['do'];
       
   510 
       
   511 	if ( $scale && $fwidth > 0 && $fheight > 0 ) {
       
   512 		$sX = imagesx($img);
       
   513 		$sY = imagesy($img);
       
   514 
       
   515 		// check if it has roughly the same w / h ratio
       
   516 		$diff = round($sX / $sY, 2) - round($fwidth / $fheight, 2);
       
   517 		if ( -0.1 < $diff && $diff < 0.1 ) {
       
   518 			// scale the full size image
       
   519 			$dst = wp_imagecreatetruecolor($fwidth, $fheight);
       
   520 			if ( imagecopyresampled( $dst, $img, 0, 0, 0, 0, $fwidth, $fheight, $sX, $sY ) ) {
       
   521 				imagedestroy($img);
       
   522 				$img = $dst;
       
   523 				$scaled = true;
       
   524 			}
       
   525 		}
       
   526 
       
   527 		if ( !$scaled ) {
       
   528 			$return->error = esc_js( __('Error while saving the scaled image. Please reload the page and try again.') );
       
   529 			return $return;
       
   530 		}
       
   531 	} elseif ( !empty($_REQUEST['history']) ) {
       
   532 		$changes = json_decode( stripslashes($_REQUEST['history']) );
       
   533 		if ( $changes )
       
   534 			$img = image_edit_apply_changes($img, $changes);
       
   535 	} else {
       
   536 		$return->error = esc_js( __('Nothing to save, the image has not changed.') );
       
   537 		return $return;
       
   538 	}
       
   539 
       
   540 	$meta = wp_get_attachment_metadata($post_id);
       
   541 	$backup_sizes = get_post_meta( $post->ID, '_wp_attachment_backup_sizes', true );
       
   542 
       
   543 	if ( !is_array($meta) ) {
       
   544 		$return->error = esc_js( __('Image data does not exist. Please re-upload the image.') );
       
   545 		return $return;
       
   546 	}
       
   547 
       
   548 	if ( !is_array($backup_sizes) )
       
   549 		$backup_sizes = array();
       
   550 
       
   551 	// generate new filename
       
   552 	$path = get_attached_file($post_id);
       
   553 	$path_parts = pathinfo52( $path );
       
   554 	$filename = $path_parts['filename'];
       
   555 	$suffix = time() . rand(100, 999);
       
   556 
       
   557 	if ( defined('IMAGE_EDIT_OVERWRITE') && IMAGE_EDIT_OVERWRITE &&
       
   558 		isset($backup_sizes['full-orig']) && $backup_sizes['full-orig']['file'] != $path_parts['basename'] ) {
       
   559 
       
   560 		if ( 'thumbnail' == $target )
       
   561 			$new_path = "{$path_parts['dirname']}/{$filename}-temp.{$path_parts['extension']}";
       
   562 		else
       
   563 			$new_path = $path;
       
   564 	} else {
       
   565 		while( true ) {
       
   566 			$filename = preg_replace( '/-e([0-9]+)$/', '', $filename );
       
   567 			$filename .= "-e{$suffix}";
       
   568 			$new_filename = "{$filename}.{$path_parts['extension']}";
       
   569 			$new_path = "{$path_parts['dirname']}/$new_filename";
       
   570 			if ( file_exists($new_path) )
       
   571 				$suffix++;
       
   572 			else
       
   573 				break;
       
   574 		}
       
   575 	}
       
   576 
       
   577 	// save the full-size file, also needed to create sub-sizes
       
   578 	if ( !wp_save_image_file($new_path, $img, $post->post_mime_type, $post_id) ) {
       
   579 		$return->error = esc_js( __('Unable to save the image.') );
       
   580 		return $return;
       
   581 	}
       
   582 
       
   583 	if ( 'nothumb' == $target || 'all' == $target || 'full' == $target || $scaled ) {
       
   584 		$tag = false;
       
   585 		if ( isset($backup_sizes['full-orig']) ) {
       
   586 			if ( ( !defined('IMAGE_EDIT_OVERWRITE') || !IMAGE_EDIT_OVERWRITE ) && $backup_sizes['full-orig']['file'] != $path_parts['basename'] )
       
   587 				$tag = "full-$suffix";
       
   588 		} else {
       
   589 			$tag = 'full-orig';
       
   590 		}
       
   591 
       
   592 		if ( $tag )
       
   593 			$backup_sizes[$tag] = array('width' => $meta['width'], 'height' => $meta['height'], 'file' => $path_parts['basename']);
       
   594 
       
   595 		$success = update_attached_file($post_id, $new_path);
       
   596 
       
   597 		$meta['file'] = _wp_relative_upload_path($new_path);
       
   598 		$meta['width'] = imagesx($img);
       
   599 		$meta['height'] = imagesy($img);
       
   600 
       
   601 		list ( $uwidth, $uheight ) = wp_shrink_dimensions($meta['width'], $meta['height']);
       
   602 		$meta['hwstring_small'] = "height='$uheight' width='$uwidth'";
       
   603 
       
   604 		if ( $success && ('nothumb' == $target || 'all' == $target) ) {
       
   605 			$sizes = apply_filters( 'intermediate_image_sizes', array('large', 'medium', 'thumbnail') );
       
   606 			if ( 'nothumb' == $target )
       
   607 				$sizes = array_diff( $sizes, array('thumbnail') );
       
   608 		}
       
   609 
       
   610 		$return->fw = $meta['width'];
       
   611 		$return->fh = $meta['height'];
       
   612 	} elseif ( 'thumbnail' == $target ) {
       
   613 		$sizes = array( 'thumbnail' );
       
   614 		$success = $delete = $nocrop = true;
       
   615 	}
       
   616 
       
   617 	if ( isset($sizes) ) {
       
   618 		foreach ( $sizes as $size ) {
       
   619 			$tag = false;
       
   620 			if ( isset($meta['sizes'][$size]) ) {
       
   621 				if ( isset($backup_sizes["$size-orig"]) ) {
       
   622 					if ( ( !defined('IMAGE_EDIT_OVERWRITE') || !IMAGE_EDIT_OVERWRITE ) && $backup_sizes["$size-orig"]['file'] != $meta['sizes'][$size]['file'] )
       
   623 						$tag = "$size-$suffix";
       
   624 				} else {
       
   625 					$tag = "$size-orig";
       
   626 				}
       
   627 
       
   628 				if ( $tag )
       
   629 					$backup_sizes[$tag] = $meta['sizes'][$size];
       
   630 			}
       
   631 
       
   632 			$crop = $nocrop ? false : get_option("{$size}_crop");
       
   633 			$resized = image_make_intermediate_size($new_path, get_option("{$size}_size_w"), get_option("{$size}_size_h"), $crop );
       
   634 
       
   635 			if ( $resized )
       
   636 				$meta['sizes'][$size] = $resized;
       
   637 			else
       
   638 				unset($meta['sizes'][$size]);
       
   639 		}
       
   640 	}
       
   641 
       
   642 	if ( $success ) {
       
   643 		wp_update_attachment_metadata($post_id, $meta);
       
   644 		update_post_meta( $post_id, '_wp_attachment_backup_sizes', $backup_sizes);
       
   645 
       
   646 		if ( $target == 'thumbnail' || $target == 'all' || $target == 'full' ) {
       
   647 			$file_url = wp_get_attachment_url($post_id);
       
   648 			if ( $thumb = $meta['sizes']['thumbnail'] )
       
   649 				$return->thumbnail = path_join( dirname($file_url), $thumb['file'] );
       
   650 			else
       
   651 				$return->thumbnail = "$file_url?w=128&h=128";
       
   652 		}
       
   653 	} else {
       
   654 		$delete = true;
       
   655 	}
       
   656 
       
   657 	if ( $delete ) {
       
   658 		$delpath = apply_filters('wp_delete_file', $new_path);
       
   659 		@unlink($delpath);
       
   660 	}
       
   661 
       
   662 	imagedestroy($img);
       
   663 
       
   664 	$return->msg = esc_js( __('Image saved') );
       
   665 	return $return;
       
   666 }
       
   667